Fluke 5440A/B Direct Voltage Calibrator

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Multiple contact, cross bar relays have been employed in all critical switching areas. They are mounted in sockets and have hard gold contacts. These relays offer the most reliable operation available. The 5540A calibrator also includes self-diagnostics. This capability allows the instrument to locate faults down to the module level. Analog and digital test can be selected from the alphanumeric display on the front panel.